Given numbers are 644,138,207,857

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 644,138,207,857 is 4967172.

Find LCM of 644,138,207,857 with Prime Factorization

Multiply the prime numbers at the bottom and the left side.

2 x 3 x 23 x 14 x 1 x 3 x 857 = 4967172

Therefore, the lowest common multiple of 644,138,207,857 is 4967172.

LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}

Firstly, we have to find the product of all the numbers.

644 x 138 x 207 x 857 = 15765803928

Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.

644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

138 : 1, 2, 3, 6, 23, 46, 69, 138

207 : 1, 3, 9, 23, 69, 207

857 : 1, 857

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 644,138,207,857, is 1.

Now, the common factors can be found like this.

644:2x 2x 7x 23

138:2x 3x 23

207:3x 3x 23

857:857

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

2x 3x 23x 23 = 3174

Therefore, the value for common factors is 3174.

Now that we have all the elements of the formula, we can plug them in to calculate the LCM.

LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}

LCM = 15765803928/(1x3174)

LCM = 15765803928/3174

LCM = 4967172

Thus, we can understand that the LCM of 644,138,207,857 is 4967172.

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 335, 822, 859, 669
• LCM of 354, 529, 212, 874
• LCM of 576, 786, 596, 469
• LCM of 759, 337, 580, 621
• LCM of 354, 918, 794, 508

1. What is the LCM of 644, 138, 207, 857?

Answer: LCM of 644, 138, 207, 857 is 4967172.

2. How to calculate the LCM of 644, 138, 207, 857?

The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 644, 138, 207, 857.

3. What is the LCM formula?

The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.